Gasket or washer



June 4, 1929. I P. G. GRIFFITH 1,715,356

GASKET OR WASHER Filed 001;. Il, 1927 rial, vulcanized fibre,

- agglomerated cork Patented June 4, 1 929;

UNITED STAT QFF'ICE, v

PATRICK GILL GRIFFITH, OF WALTON-OLI-THAMES, ENGLAND, ASSIGNjOR TO 3'. PAYEN LIMITED, OF CHURCH WHARF, LONDON, ENGLAND, A BRITISH COMPANY GASKEET OR WASHER.

Application filed October 11, 1927, Serial No. 225,457, anddn Great Britain January 13, 1927.

This invention relates to gaskets or washers, such as are employed for making fluidtight joints and comprising resilient material interposed between two layers of protective material such as thin sheet metal and has for its object an improved washer adapted especially to withstand the action of lubricating oi paraffin or petrol.

The improved Washer of this invention comprises in its simplest form a layer of resilient material interposed between two layers of tougher material the whole being provided with a covering of protective material such as thin sheet metal. For example, a ring of cork may be interposed between two layers of compressed fibre and the whole enclosed in a covering of thin sheet lead, said covering being in either one or two pieces according to the width and size of the washer.

In some cases more material may be arranged within the covering and as examples of the tougher mateleather, hard felt, and compressed paper may be mentioned whilst may be used for the 'resilient material and lead, copper or like comparatively soft metal in thin sheet form may be employed for the covering.

The invention is illustrated by the accompanying drawings wherein Figure 1 is a face view of one form of washer, and Figure 2 is an enlarged cross section on the line 2-2, Figure 1, whilst Figure 3 is a similar view to Figure 2 showing a modification. I

than three layers of In the form of the invention shown in Figures 1 and 2 a. ring a of cardboard or like compressible material is arranged between two rings b, b of vulcanized fibre and the Whole is enclosed by a covering 0 of thin sheet lead alloy.

The covering 0 mayconsist of a single piece of metal folded over the fiat surfaces and the nner and outer. peripheries of the washer as illustrated in Figures 1 and 2, or it may consist of two pieces 0 and d one, d, in the form of a fiat washer lying on one of said fiat surfaces, whilst the other, 0, lies on the other of said flat surfaces and its margins are folded over the inner and outer peripheries of the washers so as to overlie the inner andside of said cardboard layer and a protective covering therefor of thin sheet lead alloy.

PATRICK GILL GRIFFITH. I 

